Landmark 365 User Manual - page 11
Heartland Owners Forum
http://manuals.heartlandowners.org
Landmark 365 User Guide V1.1.pdf
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Version 1.1, March 10, 2016
The switch marked “12 Volt’ uses 12 volt DC power from the batteries (when boon docking) or Power
Converter (when on shore power) in conjunction with propane to heat the water with a flame.
The switch marked “120 Volt” uses 120 Volt AC (when plugged into shore power) to heat a heating
element that raises the temperature of the water.
Checking for water in the water heater
Before turning the water heater ON, you must verify that there is water in the water heater tank.
Normally, when RVs are winterized, and when shipped from the factory, the water heater is drained and
the Bypass Control prevents water from entering the tank. Don’t assume that your dealer has set the
water system to normal operation and filled the water heater tank for you.
The Bypass Control must be set back to the normal operating position and the tank filled prior to turning
the water heater ON. If the 120 Volt switch is turned ON with an empty tank, you will quickly burn out
the heating element.
If you’re not sure whether there is water in the tank, consult the
Water Heater Usage Guide
.
Secondary Switch
On new trailers with Suburban Water Heaters, to protect you from accidently applying power to the
electric heating element, there is a secondary switch on the outside of the water heater. The exterior
cover must be removed to access the switch, which is located in the lower left corner. There may be a
cotter pin holding the switch in the OFF position. Atwood water heaters do not have this switch.
Water Heater Anode Rod
Suburban water heaters use a sacrificial anode rod to protect the tank lining from electrolytic damage.
(Atwood uses a different tank liner material and doesn’t need an anode rod). Heartland ships the anode
rod uninstalled. The dealer should have installed it for you, but you should check that it’s installed